### Install NodeJS Dependencies

Source: https://www.softactivate.com/doc

Run 'npm install' in the respective subfolders of the SDK to install required dependency packages for the NodeJS licensing server.

```bash
npm install
```

--------------------------------

### Trial License Implementation

Source: https://www.softactivate.com/doc

Example demonstrating how to implement trial versions with grace periods and expiration handling.

```APIDOC
## Trial License Implementation

### Description
This example demonstrates how to implement trial versions with grace periods and expiration handling using the SoftActivate SDK.

### Method
N/A (Code Example)

### Endpoint
N/A

### Parameters
N/A

### Request Example
```csharp
using SoftActivate.Licensing;

public class TrialManager
{
    private LicenseTemplate template;
    private KeyValidator validator;
    
    public bool IsTrialValid()
    {
        // Check if trial period has expired
        validator = new KeyValidator(template);
        validator.SetKey(GetStoredTrialKey());
        
        if (!validator.IsValid())
            return false;
            
        // Check expiration date
        DateTime expiryDate = validator.GetValidationDataDateTime("ExpiryDate");
        if (DateTime.Now > expiryDate)
        {
            // Grace period check
            TimeSpan gracePeriod = TimeSpan.FromDays(7);
            if (DateTime.Now > expiryDate.Add(gracePeriod))
                return false;
                
            // Show grace period warning
            ShowGracePeriodWarning(expiryDate.Add(gracePeriod) - DateTime.Now);
        }
        
        return true;
    }
    
    public int GetRemainingTrialDays()
    {
        DateTime expiryDate = validator.GetValidationDataDateTime("ExpiryDate");
        TimeSpan remaining = expiryDate - DateTime.Now;
        return Math.Max(0, remaining.Days);
    }
}
```

### Response
N/A (This is a client-side code example)
```

--------------------------------

### Run NodeJS Licensing Server

Source: https://www.softactivate.com/doc

Execute 'node index.js' in the lms folder to start the SoftActivate Licensing Server. It defaults to listening on port 3001.

```bash
node index.js
```

--------------------------------

### Basic License Key Validation (C#)

Source: https://www.softactivate.com/doc

Example demonstrating how to perform basic license key validation using the SoftActivate SDK in C#.

```APIDOC
## Basic License Key Validation (C#)

### Description
This example demonstrates how to implement basic license key validation in your C# application using the SoftActivate SDK.

### Method
N/A (Code Example)

### Endpoint
N/A

### Parameters
N/A

### Request Example
```csharp
using SoftActivate.Licensing;

// Create a license template (use your own keys in production)
LicenseTemplate template = new LicenseTemplate();
template.LoadXml("<LicenseTemplate version=\"5\">...</LicenseTemplate>");

// Validate a license key
KeyValidator validator = new KeyValidator(template);
validator.SetKey("YOUR-LICENSE-KEY-HERE");

if (validator.IsValid())
{
    Console.WriteLine("License is valid!");
    
    // Get validation data
    string productName = validator.GetValidationDataString("ProductName");
    int version = validator.GetValidationDataInteger("Version");
    
    Console.WriteLine($"Product: {productName}, Version: {version}");
}
else
{
    Console.WriteLine("Invalid license key");
}
```

### Response
N/A (This is a client-side code example)
```

--------------------------------

### Basic License Key Validation (C++)

Source: https://www.softactivate.com/doc

Example demonstrating how to perform basic license key validation using the SoftActivate SDK in C++.

```APIDOC
## Basic License Key Validation (C++)

### Description
This example demonstrates how to implement basic license key validation in your C++ application using the SoftActivate SDK.

### Method
N/A (Code Example)

### Endpoint
N/A

### Parameters
N/A

### Request Example
```cpp
#include "licensing.h"

// Create template and validator
LicenseTemplate* pTemplate = CreateLicenseTemplate();
pTemplate->LoadXml("<LicenseTemplate version=\"5\">...</LicenseTemplate>");

KeyValidator* pValidator = CreateKeyValidator(pTemplate);
pValidator->SetKey("YOUR-LICENSE-KEY-HERE");

if (pValidator->IsValid())
{
    printf("License is valid!\n");
    
    // Get validation data
    const char* productName = pValidator->GetValidationDataString("ProductName");
    int version = pValidator->GetValidationDataInteger("Version");
    
    printf("Product: %s, Version: %d\n", productName, version);
}
else
{
    printf("Invalid license key\n");
}

// Clean up
pValidator->Release();
pTemplate->Release();
```

### Response
N/A (This is a client-side code example)
```

--------------------------------

### LicenseTemplate::GetHeader

Source: https://www.softactivate.com/doc

Gets the current license key header.

```APIDOC
## GET LicenseTemplate::GetHeader

### Description
Gets the license key header.

### Return Values
- **string** - The license key header.
```

--------------------------------

### Online License Activation

Source: https://www.softactivate.com/doc

Implement online activation using LicensingClient. This involves getting the hardware ID, creating the client with server details, and initiating the activation process.

```csharp
using SoftActivate.Licensing;

public class OnlineActivation
{
    private LicensingClient client;
    private string hardwareId;
    
    public async Task<bool> ActivateLicense(string licenseKey)
    {
        try
        {
            // Get hardware ID
            hardwareId = KeyHelper.GetHardwareId();
            
            // Create licensing client
            LicenseTemplate template = LoadTemplate();
            client = new LicensingClient(
                "https://your-server.com/activate",
                template,
                licenseKey,
                null,
                hardwareId
            );
            
            // Set up event handlers
            client.LicensingComplete += OnActivationComplete;
            client.LicensingException += OnActivationError;
            
            // Start activation process
            client.BeginAcquireLicense();
            
            return true;
        }
        catch (Exception ex)
        {
            HandleActivationError(ex);
            return false;
        }
    }
    
    private void OnActivationComplete()
    {
        // Store activation data
        SaveActivationData(client.ActivationKey, client.HardwareId);
        MessageBox.Show("License activated successfully!");
    }
    
    private void OnActivationError(Exception ex)
    {
        MessageBox.Show($"Activation failed: {ex.Message}");
    }
}
```

--------------------------------

### LicenseTemplate::GetFooter

Source: https://www.softactivate.com/doc

Gets the current license key footer.

```APIDOC
## GET LicenseTemplate::GetFooter

### Description
Gets the license key footer.

### Return Values
- **string** - The license key footer.
```

--------------------------------

### LicenseTemplate::GetEncoding

Source: https://www.softactivate.com/doc

Gets the current encoding used for license keys.

```APIDOC
## GET LicenseTemplate::GetEncoding

### Description
Gets the encoding used for the license keys.

### Return Values
- **encoding** (LICENSE_KEY_ENCODING) - The encoding used (ENCODING_BASE32X or ENCODING_BASE64X).
```

--------------------------------

### Registering the SDK with a License Key

Source: https://www.softactivate.com/doc

Use this method to initialize the SDK for license key or key pair generation. Do not use this in end-user applications.

```cpp
SDKRegistration::SetLicenseKey()
```

--------------------------------

### Initialize UI License Manager

Source: https://www.softactivate.com/doc

Use UILicenseManager for easy UI integration. Load the license template from resources and check license validity on startup, showing the dialog if invalid.

```csharp
using SoftActivate.Licensing.UI;

public partial class MainForm : Form
{
    private UILicenseManager licenseManager;
    
    public MainForm()
    {
        InitializeComponent();
        InitializeLicensing();
    }
    
    private void InitializeLicensing()
    {
        // Create license template
        LicenseTemplate template = new LicenseTemplate();
        template.LoadXml(GetEmbeddedTemplate()); // Load from resources
        
        // Initialize UI license manager
        licenseManager = new UILicenseManager(template);
        licenseManager.LicenseAcquired += OnLicenseAcquired;
        licenseManager.LicenseExpired += OnLicenseExpired;
        
        // Check license on startup
        if (!licenseManager.IsLicenseValid())
        {
            licenseManager.ShowLicenseDialog();
        }
    }
    
    private void OnLicenseAcquired(object sender, EventArgs e)
    {
        // License successfully acquired/validated
        EnableFullFeatures();
    }
    
    private void OnLicenseExpired(object sender, EventArgs e)
    {
        // Handle license expiration
        ShowExpirationDialog();
    }
}
```

--------------------------------

### Trial License Management (C#)

Source: https://www.softactivate.com/doc

Implement trial functionality with grace periods using this C# class. It checks for expiration and manages remaining trial days.

```csharp
using SoftActivate.Licensing;

public class TrialManager
{
    private LicenseTemplate template;
    private KeyValidator validator;
    
    public bool IsTrialValid()
    {
        // Check if trial period has expired
        validator = new KeyValidator(template);
        validator.SetKey(GetStoredTrialKey());
        
        if (!validator.IsValid())
            return false;
            
        // Check expiration date
        DateTime expiryDate = validator.GetValidationDataDateTime("ExpiryDate");
        if (DateTime.Now > expiryDate)
        {
            // Grace period check
            TimeSpan gracePeriod = TimeSpan.FromDays(7);
            if (DateTime.Now > expiryDate.Add(gracePeriod))
                return false;
                
            // Show grace period warning
            ShowGracePeriodWarning(expiryDate.Add(gracePeriod) - DateTime.Now);
        }
        
        return true;
    }
    
    public int GetRemainingTrialDays()
    {
        DateTime expiryDate = validator.GetValidationDataDateTime("ExpiryDate");
        TimeSpan remaining = expiryDate - DateTime.Now;
        return Math.Max(0, remaining.Days);
    }
}
```

--------------------------------

### SDKRegistration::SetLicenseKey

Source: https://www.softactivate.com/doc

Initializes the SDK with a purchased license key. This method is crucial for license key generation and public/private key pair generation. If not called, the SDK operates in DEMO mode.

```APIDOC
## SDKRegistration::SetLicenseKey

### Description
Initializes the SDK by entering the purchased SDK license key. This method must NOT be called if the SDK will only be used for license key validation or client-side software activation. This should be the first method called before using the SDK for license key generation or public/private key pair generation. If this method is not called when the SDK will be used for license key generation or public/private key pair generation, the SDK will function in DEMO mode.

### Method
`static void` (C++), `static void` (C#)

### Endpoint
N/A (This is a static method within a class)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```cpp
// C++
SDKRegistration::SetLicenseKey("YOUR-LICENSE-KEY-HERE");
```

```csharp
// C#
SDKRegistration.SetLicenseKey("YOUR-LICENSE-KEY-HERE");
```

### Response
#### Success Response (void)
None.

#### Response Example
N/A
```

--------------------------------

### LicensingClient::AcquireLicense

Source: https://www.softactivate.com/doc

Sends the product key and hardware ID to the licensing service to acquire an activation key.

```APIDOC
## void LicensingClient::AcquireLicense()

### Description
Contacts the licensing service over the internet to validate the license and obtain a signed activation key.
```

--------------------------------

### Basic License Key Validation (C++)

Source: https://www.softactivate.com/doc

This C++ snippet demonstrates how to validate a license key using the SDK. Remember to release resources after use.

```cpp
#include "licensing.h"

// Create template and validator
LicenseTemplate* pTemplate = CreateLicenseTemplate();
pTemplate->LoadXml("<LicenseTemplate version=\"5\">...</LicenseTemplate>");

KeyValidator* pValidator = CreateKeyValidator(pTemplate);
pValidator->SetKey("YOUR-LICENSE-KEY-HERE");

if (pValidator->IsValid())
{
    printf("License is valid!\n");
    
    // Get validation data
    const char* productName = pValidator->GetValidationDataString("ProductName");
    int version = pValidator->GetValidationDataInteger("Version");
    
    printf("Product: %s, Version: %d\n", productName, version);
}
else
{
    printf("Invalid license key\n");
}

// Clean up
pValidator->Release();
pTemplate->Release();
```

--------------------------------

### Running the UILicenseManager

Source: https://www.softactivate.com/doc

Invokes the registration logic and HTML-based UI for .NET applications using the LicensingUI.Net.dll assembly.

```csharp
UILicenseManager.Run()
```

--------------------------------

### KeyHelper Methods

Source: https://www.softactivate.com/doc

Methods for device identification and security checks.

```APIDOC
## KeyHelper::GetCurrentHardwareId

### Description
Returns a string which uniquely identifies the device (computer) on which the method is called.

### Response
- **Return Value** (string) - The hardware id string.

---

## KeyHelper::MatchCurrentHardwareId

### Description
Checks if the supplied hardware id string matches this computer.

### Parameters
#### Request Body
- **hardwareId** (string) - Required - The hardware id to be matched to the current hardware state.

### Response
- **Return Value** (bool) - Specifies if the computer matches the supplied hardware id.
```

--------------------------------

### ShareIt Integration

Source: https://www.softactivate.com/doc

Configures the SoftActivate Licensing Server to automatically generate license keys for ShareIt products.

```APIDOC
## POST /ShareIt.ashx

### Description
Handles remote license generation requests from ShareIt. Configure this URL in the ShareIt control panel as the remote CGI license generator.

### Method
POST

### Endpoint
/ShareIt.ashx
```

--------------------------------

### RegNow Integration

Source: https://www.softactivate.com/doc

Configures the SoftActivate Licensing Server to automatically generate license keys for RegNow products.

```APIDOC
## POST /RegNow.ashx

### Description
Handles remote license generation requests from RegNow. Configure this URL in the RegNow control panel as the remote CGI license generator.

### Method
POST

### Endpoint
/RegNow.ashx
```

--------------------------------

### LicensingClient Methods

Source: https://www.softactivate.com/doc

Methods for managing license validation, status, and configuration.

```APIDOC
## LicensingClient::SetLicenseTemplateId

### Description
Sets the template ID string that identifies the license configuration.

### Parameters
#### Request Body
- **templateId** (const char*) - Required - The template ID string that identifies the license configuration.

## LicensingClient::ValidateLicense

### Description
Validates a license using the provided validation arguments and returns detailed validation results.

### Parameters
#### Request Body
- **args** (LicenseValidationArgs*) - Required - Pointer to a LicenseValidationArgs object containing the license key and validation data.

### Response
- **Result** (LicenseValidationResult*) - Returns a pointer to a LicenseValidationResult object or NULL if validation fails.

## LicensingClient::IsLicenseValid

### Description
Checks if the activation key signature is valid and if the hardware ID matches the computer.

### Response
- **Result** (bool) - true if valid, false otherwise.

## LicensingClient::GetLicenseActivationStatus

### Description
Retrieves the activation status after a call to IsLicenseValid().

### Response
- **Result** (int) - A LICENSE_STATUS value (0: Valid, 1: Invalid, 12: InvalidHardwareId, 13: Expired, 14: InvalidActivationKey, 15: PaymentRequired).

## LicensingClient::GetLicenseExpirationDate

### Description
Retrieves the expiration date of the license.

### Parameters
#### Request Body
- **year** (int*) - Required - Pointer to an integer receiving the expiration year.
- **month** (int*) - Required - Pointer to an integer receiving the expiration month (1-12).
- **day** (int*) - Required - Pointer to an integer receiving the expiration day (1-31).

## LicensingClient::SetTimeValidationMethod

### Description
Sets how the SDK should validate time-based license restrictions.

### Parameters
#### Request Body
- **method** (int) - Required - Time validation method: 0 (PREFER_INTERNET_TIME), 1 (USE_INTERNET_TIME), or 2 (USE_LOCAL_TIME).
```

--------------------------------

### Implement Hardware Locking

Source: https://www.softactivate.com/doc

Use this class to validate if a license key is tied to the current hardware. If the hardware has changed, it attempts to validate the change with a server.

```csharp
public class HardwareLockingManager
{
    public bool ValidateHardwareLock(string licenseKey, string storedHardwareId)
    {
        // Get current hardware ID
        string currentHardwareId = KeyHelper.GetHardwareId();
        
        // Compare with stored hardware ID
        if (storedHardwareId != currentHardwareId)
        {
            // Hardware has changed - validate with server
            return ValidateHardwareChange(licenseKey, currentHardwareId);
        }
        
        return true;
    }
    
    private bool ValidateHardwareChange(string licenseKey, string newHardwareId)
    {
        try
        {
            // Contact server to validate hardware change
            LicensingClient client = new LicensingClient(
                serverUrl, template, licenseKey, null, newHardwareId
            );
            
            // Server will decide if hardware change is allowed
            client.AcquireLicense();
            
            // Update stored hardware ID
            UpdateStoredHardwareId(newHardwareId);
            
            return true;
        }
        catch (Exception ex)
        {
            // Hardware change not allowed or server error
            ShowHardwareChangeError(ex.Message);
            return false;
        }
    }
}
```

--------------------------------

### LicenseTemplate Class Methods

Source: https://www.softactivate.com/doc

Methods for configuring the structure of license keys.

```APIDOC
## LicenseTemplate::SetNumberOfGroups

### Description
Sets the number of character groups a license key contains.

### Parameters
#### Request Body
- **numGroups** (unsigned) - Required - The number of character groups.

## LicenseTemplate::GetNumberOfGroups

### Description
Gets the number of character groups contained by a license key.

### Response
- **Result** (unsigned) - The number of groups.

## LicenseTemplate::SetCharactersPerGroup

### Description
Sets the number of characters in each license key character group.

### Parameters
#### Request Body
- **charsPerGroup** (unsigned) - Required - The number of characters per group.

## LicenseTemplate::GetCharactersPerGroup

### Description
Gets the number of characters in each license key character group.

### Response
- **Result** (unsigned) - The number of characters per group.

## LicenseTemplate::SetVersion

### Description
Sets the license key template version.

### Parameters
#### Request Body
- **version** (unsigned) - Required - The template version.
```

--------------------------------

### LicenseTemplate Methods

Source: https://www.softactivate.com/doc

Methods for managing license template configuration, including JSON serialization, key management, and service URL settings.

```APIDOC
## LicenseTemplate::LoadJson

### Description
Loads the template parameters from a JSON string.

### Parameters
#### Request Body
- **jsonTemplate** (const char*) - Required - A JSON string containing the template parameters.

### Remarks
This method throws an exception if the JSON template string is invalid.

---

## LicenseTemplate::SaveJson

### Description
Saves the JSON representation of the template into a string.

### Parameters
#### Query Parameters
- **savePrivateKey** (bool) - Optional - Whether to include the private key in the JSON output.

### Response
- **Return Value** (const char*) - Pointer to a string containing a UTF-8 encoded JSON representation. Statically allocated, do not free.

---

## LicenseTemplate::SetPublicKeyCertificate

### Description
Sets the public key certificate used for license key validation.

### Parameters
#### Request Body
- **base64Certificate** (const char*) - Required - Base64-encoded public key certificate string.

---

## LicenseTemplate::SetPrivateKey

### Description
Sets the private key used for license key generation and signing.

### Parameters
#### Request Body
- **base64PrivateKey** (const char*) - Required - Base64-encoded private key string.
```

--------------------------------

### LicenseTemplate::LoadXml

Source: https://www.softactivate.com/doc

Loads license key template parameters from an XML string.

```APIDOC
## LicenseTemplate::LoadXml

### Description
Loads license key template parameters from an XML string.

### Method
`void LicenseTemplate::LoadXml(char * xmlString);`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
* **xmlString** (char *) - Required - The XML template representation string, UTF-8 encoded.

### Request Example
```json
{
  "xmlString": "<LicenseTemplate><ValidationDataSize>128</ValidationDataSize></LicenseTemplate>"
}
```

### Response
#### Success Response (200)
None

#### Response Example
None

### Remarks
This method throws an exception if the template string is invalid.
```

--------------------------------

### LicenseTemplate::GetVersion

Source: https://www.softactivate.com/doc

Retrieves the current version of the license key template.

```APIDOC
## GET LicenseTemplate::GetVersion

### Description
Retrieves the license key template version.

### Return Values
The license key template version. Currently, a value of 1 is returned.
```

--------------------------------

### LicenseTemplate::SetFooter

Source: https://www.softactivate.com/doc

Sets an optional line of text following the license key.

```APIDOC
## POST LicenseTemplate::SetFooter

### Description
Sets the contents of an optional line following the license key.

### Parameters
#### Request Body
- **header** (string) - Required - The footer string.
```

--------------------------------

### LicenseTemplate::SetHeader

Source: https://www.softactivate.com/doc

Sets an optional line of text preceding the license key.

```APIDOC
## POST LicenseTemplate::SetHeader

### Description
Sets the contents of an optional line of text preceding the license key.

### Parameters
#### Request Body
- **header** (string) - Required - The header string.
```

--------------------------------

### Validate License with Error Handling

Source: https://www.softactivate.com/doc

This class provides a comprehensive license validation process, checking format, expiration, and hardware ID. It includes detailed error handling for various licensing exceptions.

```csharp
public class LicenseValidator
{
    public ValidationResult ValidateLicense(string licenseKey)
    {
        ValidationResult result = new ValidationResult();
        
        try
        {
            KeyValidator validator = new KeyValidator(template);
            validator.SetKey(licenseKey);
            
            if (!validator.IsValid())
            {
                result.IsValid = false;
                result.ErrorCode = "INVALID_KEY";
                result.Message = "The license key format is invalid";
                return result;
            }
            
            // Check expiration
            if (validator.HasValidationData("ExpiryDate"))
            {
                DateTime expiry = validator.GetValidationDataDateTime("ExpiryDate");
                if (DateTime.Now > expiry)
                {
                    result.IsValid = false;
                    result.ErrorCode = "EXPIRED";
                    result.Message = $"License expired on {expiry:yyyy-MM-dd}";
                    return result;
                }
            }
            
            // Check hardware lock
            if (validator.HasValidationData("HardwareId"))
            {
                string expectedHw = validator.GetValidationDataString("HardwareId");
                string currentHw = KeyHelper.GetHardwareId();
                
                if (expectedHw != currentHw)
                {
                    result.IsValid = false;
                    result.ErrorCode = "HARDWARE_MISMATCH";
                    result.Message = "License is locked to different hardware";
                    return result;
                }
            }
            
            result.IsValid = true;
            result.Message = "License is valid";
            
        }
        catch (LicensingException ex)
        {
            result.IsValid = false;
            result.ErrorCode = "LICENSING_ERROR";
            result.Message = ex.Message;
        }
        catch (Exception ex)
        {
            result.IsValid = false;
            result.ErrorCode = "UNEXPECTED_ERROR";
            result.Message = "An unexpected error occurred during validation";
        }
        
        return result;
    }
}
```

--------------------------------

### License Class Methods

Source: https://www.softactivate.com/doc

Methods for loading and saving license data in XML or JSON formats.

```APIDOC
## License::LoadXml
### Description
Loads license information from an XML string.

## License::SaveXml
### Description
Saves the license information to an XML string.

## License::LoadJson
### Description
Loads license information from a JSON string.

## License::SaveJson
### Description
Saves the license information to a JSON string.
```

--------------------------------

### Basic License Key Validation (C#)

Source: https://www.softactivate.com/doc

Use this snippet to validate a license key in your C# application. Ensure you have a valid LicenseTemplate loaded.

```csharp
using SoftActivate.Licensing;

// Create a license template (use your own keys in production)
LicenseTemplate template = new LicenseTemplate();
template.LoadXml("<LicenseTemplate version=\"5\">...</LicenseTemplate>");

// Validate a license key
KeyValidator validator = new KeyValidator(template);
validator.SetKey("YOUR-LICENSE-KEY-HERE");

if (validator.IsValid())
{
    Console.WriteLine("License is valid!");
    
    // Get validation data
    string productName = validator.GetValidationDataString("ProductName");
    int version = validator.GetValidationDataInteger("Version");
    
    Console.WriteLine($"Product: {productName}, Version: {version}");
}
else
{
    Console.WriteLine("Invalid license key");
}
```

--------------------------------

### LicensingClient Class

Source: https://www.softactivate.com/doc

The LicensingClient class handles communication with the licensing service for activation and validation.

```APIDOC
## LicensingClient Class

### Description
Manages the client-side interaction with the SoftActivate Licensing Server for license acquisition and activation status checks.

### Methods
- **AcquireLicense()**: Requests a license from the server.
- **ValidateLicense()**: Performs a validation check against the server.
- **GetLicenseActivationStatus()**: Returns the current activation status of the license.
```

--------------------------------

### LicensingClient::GetActivationKey

Source: https://www.softactivate.com/doc

Retrieves the activation key returned by the licensing service.

```APIDOC
## const char * LicensingClient::GetActivationKey()

### Description
Retrieves the activation key after a successful license acquisition.

### Response
- **Return Value** (const char *) - Pointer to the activation key string, or NULL if not acquired.
```

--------------------------------

### LicenseValidationArgs Class Methods

Source: https://www.softactivate.com/doc

Methods for setting validation data for a license key.

```APIDOC
## LicenseValidationArgs::SetIntLicenseKeyValidationData
### Description
Sets integer validation data for the license key.

## LicenseValidationArgs::SetStringLicenseKeyValidationData
### Description
Sets string validation data for the license key.

## LicenseValidationArgs::SetDateLicenseKeyValidationData
### Description
Sets date validation data for the license key.

## LicenseValidationArgs::SetLicenseKeyValidationData
### Description
Sets raw binary validation data for the license key.
```

--------------------------------

### LicenseTemplate::EnumDataFields

Source: https://www.softactivate.com/doc

Enumerates license key data fields.

```APIDOC
## GET LicenseTemplate::EnumDataFields

### Description
Enumerates license key data fields.

### Return Values
- **bool** - Returns true if a field was retrieved, false otherwise.
```

--------------------------------

### LicenseTemplate::SetSignatureSize

Source: https://www.softactivate.com/doc

Sets the license key signature size.

```APIDOC
## LicenseTemplate::SetSignatureSize

### Description
Sets the license key signature size.

### Method
`void LicenseTemplate::SetSignatureSize(unsigned size);`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
* **size** (unsigned) - Required - The desired size for the license key signature. The size must be in the 76-322 range.

### Request Example
```json
{
  "size": 128
}
```

### Response
#### Success Response (200)
None

#### Response Example
None

### Remarks
The license key signature size governs license key security. Care must be taken when choosing the signature size.
```

--------------------------------

### LicensingClient::SetLicenseTemplate

Source: https://www.softactivate.com/doc

Sets the license template for the licensing client.

```APIDOC
## void LicensingClient::SetLicenseTemplate(LicenseTemplate * tmpl)

### Description
Sets the license template which defines the license key format, validation parameters, and cryptographic settings.

### Parameters
- **tmpl** (LicenseTemplate *) - Required - Pointer to the license template object.
```

--------------------------------

### LicenseTemplate::GetDataSize

Source: https://www.softactivate.com/doc

Retrieves the size of data embedded in the license key.

```APIDOC
## GET LicenseTemplate::GetDataSize

### Description
Retrieves the size of data embedded in the license key.

### Return Values
- **unsigned** - The size in bits of the embedded license key data.
```

--------------------------------

### LicenseTemplate::SetEncoding

Source: https://www.softactivate.com/doc

Sets the character encoding for the license key.

```APIDOC
## POST LicenseTemplate::SetEncoding

### Description
Sets the character encoding for the license key.

### Parameters
#### Request Body
- **encoding** (LICENSE_KEY_ENCODING) - Required - The character encoding (ENCODING_BASE32X or ENCODING_BASE64X).
```

--------------------------------

### SDKRegistration::IsRegistered

Source: https://www.softactivate.com/doc

Checks if the SDK has been registered with a valid license key. Returns true if registered, false otherwise.

```APIDOC
## SDKRegistration::IsRegistered

### Description
Checks if the SDK has been registered with a valid license key.

### Method
`static bool` (C++), `static bool` (C#)

### Endpoint
N/A (This is a static method within a class)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```cpp
// C++
if (SDKRegistration::IsRegistered()) {
    // SDK is registered
}
```

```csharp
// C#
if (SDKRegistration.IsRegistered()) {
    // SDK is registered
}
```

### Response
#### Success Response (bool)
- **true** (bool) - The SDK has been successfully registered with a valid license key.
- **false** (bool) - The SDK has not been registered or the license key is invalid.

#### Response Example
```json
true
```

```json
false
```
```

--------------------------------

### LicenseTemplate::EnumDataFields

Source: https://www.softactivate.com/doc

Enumerates the fields of data used for license key validation.

```APIDOC
## LicenseTemplate::EnumDataFields

### Description
Enumerates the fields of data used for license key validation.

### Method
`bool EnumValidationFields(void **enumHandle, char_t * fieldName, unsigned * fieldNameSize, FIELD_TYPE * fieldType, unsigned * fieldSize, unsigned * startPos);`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
* **enumHandle** (void **) - Input/Output - Pointer to a pointer used to store a handle to the enumeration state. A pointer to a NULL handle must be passed at the first call.
* **fieldName** (char_t *) - Input/Output - Pointer to a buffer which will be filled with the field name.
* **fieldNameSize** (unsigned *) - Input/Output - Pointer to an unsigned which will receive the size of the field name string. At input this must contain the size of the buffer.
* **fieldType** (FIELD_TYPE *) - Output - Pointer who will receive the type of the field.
* **fieldSize** (unsigned *) - Output - Pointer to an unsigned who will receive the field size in bits.
* **startPos** (unsigned *) - Output - Pointer to an unsigned who will receive the field start position in license key data.

### Request Example
None

### Response
#### Success Response (200)
* **return_value** (bool) - If the enumeration is over, returns false and the output parameters are not filled. Otherwise returns true.

### Remarks
None.
```

--------------------------------

### KeyHelper::DetectClockManipulation

Source: https://www.softactivate.com/doc

Checks for evidence of system clock manipulation.

```APIDOC
## KeyHelper::DetectClockManipulation

### Description
Searches for evidence that the system time was once set after the threshold date.

### Parameters
#### Path Parameters
- **thresholdDate** (DateTime) - Required - The date to check against.

### Response
- **Return Value** (bool) - Indicates if evidence was found that the system clock was deliberately turned back.
```

--------------------------------

### KeyGenerator Class Reference

Source: https://www.softactivate.com/doc

Reference for the KeyGenerator class used in the SoftActivate Licensing SDK.

```APIDOC
## KeyGenerator::KeyGenerator

### Description
Initializes a new instance of the KeyGenerator object.

### Prototype
KeyGenerator::KeyGenerator();

### Parameters
None.
```

--------------------------------

### LicenseTemplate::GetValidationDataSize

Source: https://www.softactivate.com/doc

Retrieves the size of the data used to validate the license key.

```APIDOC
## LicenseTemplate::GetValidationDataSize

### Description
Retrieves the size of the data used to validate the license key.

### Method
`unsigned LicenseTemplate::GetValidationDataSize();`

### Endpoint
None

### Parameters
None

### Request Example
None

### Response
#### Success Response (200)
* **return_value** (unsigned) - The size in bits of the validation data.

### Remarks
None.
```

--------------------------------

### LicenseTemplate::SetDataSize

Source: https://www.softactivate.com/doc

Sets the size of data embedded in the license key.

```APIDOC
## POST LicenseTemplate::SetDataSize

### Description
Sets the size of data embedded in the license key.

### Parameters
#### Request Body
- **dataSize** (unsigned) - Required - The size of data in bits.
```

--------------------------------

### LicenseTemplate::GetSignatureSize

Source: https://www.softactivate.com/doc

Retrieves the size of the data used to validate the license key.

```APIDOC
## LicenseTemplate::GetSignatureSize

### Description
Retrieves the size of the data used to validate the license key.

### Method
`unsigned LicenseTemplate::GetSignatureSize();`

### Endpoint
None

### Parameters
None

### Request Example
None

### Response
#### Success Response (200)
* **return_value** (unsigned) - The signature size in bits.

### Remarks
None.
```

--------------------------------

### KeyGenerator Class

Source: https://www.softactivate.com/doc

The KeyGenerator class is used for creating and managing license keys.

```APIDOC
## KeyGenerator::~KeyGenerator

### Description
Destroys a KeyGenerator object, freeing all associated resources.

### Prototype
_KeyGenerator::~KeyGenerator();_

### Parameters
None.

### Return Values
None.
```

```APIDOC
## KeyGenerator::SetKeyTemplate

### Description
Sets the template used to generate license keys.

### Prototype
_void KeyGenerator::SetKeyTemplate(LicenseTemplate & keyTemplate);_

### Parameters
#### Path Parameters
- **keyTemplate** (LicenseTemplate&) - Required - The template used to generate license keys.

### Return Values
None.
```

```APIDOC
## KeyGenerator::SetKeyData

### Description
Sets the contents of a data field.

### Prototype
_void KeyGenerator::SetKeyData(const char_t * fieldName, const void * rawData, unsigned len);
void KeyGenerator::SetKeyData(const char_t * fieldName, unsigned intData);
void KeyGenerator::SetKeyData(const char_t * fieldName, const char_t * stringData);_

### Parameters
#### Path Parameters
- **fieldName** (const char_t *) - Required - The name of the field for which to set the data.
- **rawData** (const void *) - Required - Pointer to a buffer containing the field data.
- **len** (unsigned) - Required - Length of the rawData buffer.
- **intData** (unsigned) - Required - An int value to set for the field.
- **stringData** (const char_t *) - Required - A string value to set for the field.

### Return Values
None.

### Remarks
If the field size (as specified in the template) is smaller than the data size, the data is truncated to fit the field.
```

```APIDOC
## KeyGenerator::SetValidationData

### Description
Sets the contents of a validation field.

### Prototype
_void KeyGenerator::SetValidationData(const char_t * fieldName, const void * rawData, unsigned len);
void KeyGenerator::SetValidationData(const char_t * fieldName, unsigned intData);
void KeyGenerator::SetValidationData(const char_t * fieldName, const char_t * stringData);_

### Parameters
#### Path Parameters
- **fieldName** (const char_t *) - Required - The name of the field for which to set the data.
- **rawData** (const void *) - Required - Pointer to a buffer containing the field data.
- **len** (unsigned) - Required - Length of the rawData buffer.
- **intData** (unsigned) - Required - An int value to set for the field.
- **stringData** (const char_t *) - Required - A string value to set for the field.

### Return Values
None.

### Remarks
If the field size (as specified in the template) is smaller than the data size, the data is truncated to fit the field.
```

```APIDOC
## KeyGenerator::GenerateKey

### Description
Generates a license key.

### Prototype
_const char_t * LicenseTemplate::GenerateKey();_

### Parameters
None.

### Return Values
Pointer to a NULL-terminated string containing the license key. This string is statically allocated, do not attempt to free it.
```

--------------------------------

### LicenseValidationResult Class Methods

Source: https://www.softactivate.com/doc

Methods for retrieving validation results and license status.

```APIDOC
## LicenseValidationResult::IsLicenseExpired
### Description
Checks if the license has expired.

## LicenseValidationResult::IsPaymentRequired
### Description
Checks if payment is required for this license.

## LicenseValidationResult::GetLicenseValidityDays
### Description
Gets the number of days the license remains valid.
```

--------------------------------

### LicensingClient::SetLicensingServiceUrl

Source: https://www.softactivate.com/doc

Sets the URL of the licensing service.

```APIDOC
## void LicensingClient::SetLicensingServiceUrl(const char * url)

### Description
Sets the URL of the licensing service.

### Parameters
- **url** (const char *) - Required - The URL of the licensing service.
```

--------------------------------

### LicenseTemplate::GetGroupSeparator

Source: https://www.softactivate.com/doc

Retrieves the current group separator string.

```APIDOC
## GET LicenseTemplate::GetGroupSeparator

### Description
Retrieves the string or character that separates license key character groups.

### Return Values
- **string** - Pointer to a string containing the license key group separator string.
```

--------------------------------

### LicenseTemplate::SaveXml

Source: https://www.softactivate.com/doc

Saves the XML representation of the template into a string.

```APIDOC
## LicenseTemplate::SaveXml

### Description
Saves the XML representation of the template into a string.

### Method
`const char * LicenseTemplate::SaveXml(bool savePrivateKey = true);`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
* **savePrivateKey** (bool) - Optional - Whether to include the private key in the XML output. Defaults to true.

### Request Example
```json
{
  "savePrivateKey": false
}
```

### Response
#### Success Response (200)
* **return_value** (const char *) - Pointer to a string containing an UTF-8 encoded XML representation of the template parameters.

### Remarks
None.
```

--------------------------------

### Subscription License Renewal Check

Source: https://www.softactivate.com/doc

Handle subscription licenses with automatic renewal checks using a Timer. This method validates the current license against the server periodically.

```csharp
using SoftActivate.Licensing;
using System.Timers;

public class SubscriptionManager
{
    private Timer renewalTimer;
    private LicensingClient client;
    
    public void StartSubscriptionMonitoring()
    {
        // Check renewal every 24 hours
        renewalTimer = new Timer(24 * 60 * 60 * 1000);
        renewalTimer.Elapsed += CheckRenewal;
        renewalTimer.Start();
    }
    
    private void CheckRenewal(object sender, ElapsedEventArgs e)
    {
        try
        {
            // Validate current license
            LicenseValidationArgs args = new LicenseValidationArgs
            {
                LicenseKey = GetStoredLicenseKey(),
                ValidateExpiration = true,
                ConnectToServer = true
            };
            
            LicenseValidationResult result = client.ValidateLicense(args);
            
            if (!result.IsValid)
            {
                if (result.Status == LICENSE_STATUS.EXPIRED)
                {
                    HandleSubscriptionExpired();
                }
                else if (result.Status == LICENSE_STATUS.SERVER_ERROR)
                {
                    // Retry later on server errors
                    ScheduleRetry();
                }
            }
            else
            {
                // Update local license data
                UpdateLocalLicenseData(result);
            }
        }
        catch (Exception ex)
        {
            LogError($"Subscription check failed: {ex.Message}");
        }
    }
}
```

--------------------------------

### LicenseTemplate::AddDataField

Source: https://www.softactivate.com/doc

Adds a new data field to the license key template.

```APIDOC
## POST LicenseTemplate::AddDataField

### Description
Adds a field of data which will be included in the license key.

### Parameters
#### Request Body
- **fieldName** (string) - Required - The name of the data field.
- **fieldType** (FIELD_TYPE) - Required - The type of the data field (FIELD_TYPE_INTEGER, FIELD_TYPE_STRING, FIELD_TYPE_RAW).
- **sizeInBits** (unsigned) - Required - The size of the data field in bits.
- **startPos** (unsigned) - Optional - The starting position of the field.
```

--------------------------------

### KeyValidator Class

Source: https://www.softactivate.com/doc

The KeyValidator class provides functionality to verify the authenticity and validity of license keys.

```APIDOC
## KeyValidator Class

### Description
Used to validate license keys against templates and specific validation data.

### Methods
- **SetKey(key)**: Sets the license key string to be validated.
- **IsKeyValid()**: Returns a boolean indicating if the provided key is valid.
- **QueryKeyData()**: Retrieves data stored within the validated license key.
```

--------------------------------

### LicenseTemplate::SetValidationDataSize

Source: https://www.softactivate.com/doc

Sets the size of the data used to validate the license key.

```APIDOC
## LicenseTemplate::SetValidationDataSize

### Description
Sets the size of the data used to validate the license key.

### Method
`void LicenseTemplate::SetValidationDataSize(unsigned sizeInBits);`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
* **sizeInBits** (unsigned) - Required - The size of validation data in bits.

### Request Example
```json
{
  "sizeInBits": 128
}
```

### Response
#### Success Response (200)
None

#### Response Example
None

### Remarks
None.
```

--------------------------------

### KeyValidator Class

Source: https://www.softactivate.com/doc

The KeyValidator class is used for validating and querying data from license keys.

```APIDOC
## KeyValidator::KeyValidator

### Description
Initializes a KeyValidator object.

### Prototype
_KeyValidator::KeyValidator();_

### Parameters
None.

### Return Values
None.
```

```APIDOC
## KeyValidator::~KeyValidator

### Description
Destroys a KeyValidator object, freeing all associated resources.

### Prototype
_KeyValidator::~KeyValidator();_

### Parameters
None.

### Return Values
None.
```

```APIDOC
## KeyValidator::SetKeyTemplate

### Description
Sets the template used to generate license keys.

### Prototype
_void KeyValidator::SetKeyTemplate(LicenseTemplate & keyTemplate);_

### Parameters
#### Path Parameters
- **keyTemplate** (LicenseTemplate&) - Required - The template used to generate license keys.

### Return Values
None.
```

```APIDOC
## KeyValidator::SetValidationData

### Description
Sets the contents of a validation field.

### Prototype
_void KeyValidator::SetValidationData(const char_t * fieldName, const void * rawData, unsigned len);
void KeyValidator::SetValidationData(const char_t * fieldName, unsigned intData);
void KeyValidator::SetValidationData(const char_t * fieldName, const char_t * stringData);_

### Parameters
#### Path Parameters
- **fieldName** (const char_t *) - Required - The name of the field for which to set the data.
- **rawData** (const void *) - Required - Pointer to a buffer containing the field data.
- **len** (unsigned) - Required - Length of the rawData buffer.
- **intData** (unsigned) - Required - An int value to set for the field.
- **stringData** (const char_t *) - Required - A string value to set for the field.

### Return Values
None.

### Remarks
If the field size (as specified in the template) is smaller than the data size, the data is truncated to fit the field.
```

```APIDOC
## KeyValidator::SetKey

### Description
Sets the license key to validate and to query data from.

### Prototype
_void KeyValidator::SetKey(const char_t * licenseKey);_

### Parameters
#### Path Parameters
- **licenseKey** (const char_t *) - Required - A NULL-terminated string containing the license key.

### Return Values
None.
```

```APIDOC
## KeyValidator::IsKeyValid

### Description
Validates the license key set using KeyValidator::SetKey().

### Prototype
_bool KeyValidator::IsKeyValid();_

### Parameters
None.

### Return Values
Returns true if the license key is valid, false if not.
```

```APIDOC
## KeyValidator::QueryKeyData

### Description
Obtains data from the license key.

### Prototype
_void KeyValidator::QueryKeyData(const char_t * fieldName, void * buf, unsigned * len);_

### Parameters
#### Path Parameters
- **fieldName** (const char_t *) - Required - The name of the field for which to query data.
- **buf** (void *) - Required - A buffer to store the retrieved data.
- **len** (unsigned *) - Required - Pointer to a variable that contains the size of the buffer and receives the actual size of the data written.
```

--------------------------------

### KeyGenerator Class

Source: https://www.softactivate.com/doc

The KeyGenerator class is used to generate license keys based on defined templates and validation data.

```APIDOC
## KeyGenerator Class

### Description
Provides methods to configure license templates and generate secure license keys.

### Methods
- **SetKeyTemplate(template)**: Sets the license template to be used for generation.
- **SetKeyData(data)**: Sets the data to be embedded in the license key.
- **SetValidationData(data)**: Sets the validation data required for the key.
- **GenerateKey()**: Generates the license key string based on the current configuration.
```

--------------------------------

### LicenseTemplate::SetGroupSeparator

Source: https://www.softactivate.com/doc

Sets the character or string used to separate groups within a license key.

```APIDOC
## POST LicenseTemplate::SetGroupSeparator

### Description
Sets the string or character that separates license key character groups.

### Parameters
#### Request Body
- **groupSeparator** (string) - Required - The group separator string.
```

--------------------------------

### LicenseTemplate::AddValidationDataField

Source: https://www.softactivate.com/doc

Adds a field of data used for license key validation.

```APIDOC
## LicenseTemplate::AddValidationDataField

### Description
Adds a field of data used for license key validation. Validation fields are not included in the license key, but they are used for validation.

### Method
`void LicenseTemplate::AddValidationDataField(const char_t * fieldName, FIELD_TYPE fieldType, unsigned sizeInBits, unsigned startPos = -1);`

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
* **fieldName** (const char_t *) - Required - The name of the data field.
* **fieldType** (FIELD_TYPE) - Required - The type of the field. It can be one of FIELD_TYPE_INTEGER, FIELD_TYPE_STRING, FIELD_TYPE_RAW.
* **sizeInBits** (unsigned) - Required - The size of the field in bits.
* **startPos** (unsigned) - Optional - The starting position (relative to bit 0) of the field in the license key validation data. Omitting this value adds the field to the next available position. Defaults to -1.

### Request Example
```json
{
  "fieldName": "user_id",
  "fieldType": "FIELD_TYPE_INTEGER",
  "sizeInBits": 32,
  "startPos": 0
}
```

### Response
#### Success Response (200)
None

#### Response Example
None

### Remarks
This method could throw an exception if the field size is too big for the chosen validation data size.
```